RRB NTPC CBT I 10 Jan 2021 Shift 2 Paper

Question : 8 of 100

Marks: +1, -0

The mean score of class A of 40 students in the mathematics test of 30 marks is 23. The mean score of class B of 45 students in the same test is 22. What is the ratio of the mean score of both the classes to that of class A?